Machine-derived non-Latin script reference project.

Non-Latin script reference not evaluated.

Nishio, Ishin. Death note, 2008: ECIP t.p. verso (Tsugumi Ohba)

NDL-OPAC, 2007-06-21 (Ōba Tsugumi [in Jpn] ; original conceptor)

Wikipedia, WWW, May 4, 2011 (born in Tokyo; a writer best known for the manga Death Note; Tsugumi Ohba is a pen name--real name and gender unknown)